Portion of a keyboard



FIG. 1 is a perspective view of a portion of a keyboard showing our newdesign;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a left side view thereof.

The broken line showing of the keys and the remainder of the keyboard isfor illustrative purposes only and form no part of the claimed design.

The ornamental design for a portion of a keyboard, as shown anddescribed.